During disasters or other emergencies, radiograms are used to communicate information critical to saving lives or property, or to inquire about the health or welfare of a disaster victim.

To get involved with NTS™ , find your local NTS affiliate on the air: ARRL Net Directory Search.

The NTS Methods and Practices Guidelines (NTS MPG) is presented as one single PDF document at this link.   The NTS MPG may also be found as an appendix to the NTS Manual that is referenced at the lower right portion of this page.

Guidelines for the ARRL NTS, traffic handlers and MARS (Military Auxiliary Radio System) communications excercise of October 2020. 

Traffic Handling Guidance  ;      ICS 213 Guidance

Find out which countries share a third party traffic agreement with the United States with the Third Party Traffic List.